bug#46292: ‘guix environment -C’ fails with Linux 4.19 (Debian)

[zimoun]

Hi,

On Thu, 04 Feb 2021 at 11:43, Ludovic Courtès <ludovic.courtes@inria.fr> wrote:

> --8<---------------cut here---------------start------------->8---
> $ guix environment --ad-hoc coreutils -C
> guix environment: error: mount: mount 
> "/gnu/store/mmhimfwmmidf09jw1plw3aw1g1zn2nkh-bash-static-5.0.16" on 
> "/tmp/guix-directory.Nagh8Y//gnu/store/mmhimfwmmidf09jw1plw3aw1g1zn2nkh-bash-static-5.0.16":
>  Operation not permitted
> $ uname -rv
> 4.19.0-13-amd64 #1 SMP Debian 4.19.160-2 (2020-11-28)
> $ cat /proc/sys/kernel/unprivileged_userns_clone
> 1
> --8<---------------cut here---------------end--------------->8---

With a bit older Debian than yours:

--8<---------------cut here---------------start------------->8---
$ guix environment --ad-hoc coreutils -C
[env]$ uname -rv
4.19.0-8-amd64 #1 SMP Debian 4.19.98-1 (2020-01-26)
[env]$ cat /proc/sys/kernel/unprivileged_userns_clone
1
[env]$ exit
exit
--8<---------------cut here---------------end--------------->8---

On another machine with the same kernel:

--8<---------------cut here---------------start------------->8---
$ guix environment --ad-hoc coreutils -C
[env]$ uname -rv
4.19.0-13-amd64 #1 SMP Debian 4.19.160-2 (2020-11-28)
[env]$ cat /proc/sys/kernel/unprivileged_userns_clone
1
[env]$ exit
exit
--8<---------------cut here---------------end--------------->8---


Maybe I misconfigured mines or something is different on yours. :-)


All the best,
simon